/*
 * Copyright (c) 2005, 2006, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
 *
 *
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 *
 *
 *
 *
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 */
package javax.swing.plaf.nimbus;

import java.awt.*;
import java.awt.geom.*;
import java.awt.image.*;
import javax.swing.*;
import javax.swing.Painter;


final class ScrollBarTrackPainter extends AbstractRegionPainter {

  //package private integers representing the available states that
  //this painter will paint. These are used when creating a new instance
  //of ScrollBarTrackPainter to determine which region/state is being painted
  //by that instance.
  static final int BACKGROUND_DISABLED = 1;
  static final int BACKGROUND_ENABLED = 2;


  private int state; //refers to one of the static final ints above
  private PaintContext ctx;

  //the following 4 variables are reused during the painting code of the layers
  private Path2D path = new Path2D.Float();
  private Rectangle2D rect = new Rectangle2D.Float(0, 0, 0, 0);
  private RoundRectangle2D roundRect = new RoundRectangle2D.Float(0, 0, 0, 0, 0, 0);
  private Ellipse2D ellipse = new Ellipse2D.Float(0, 0, 0, 0);

  //All Colors used for painting are stored here. Ideally, only those colors being used
  //by a particular instance of ScrollBarTrackPainter would be created. For the moment at least,
  //however, all are created for each instance.
  private Color color1 = decodeColor("nimbusBlueGrey", -0.027777791f, -0.10016362f, 0.011764705f,
      0);
  private Color color2 = decodeColor("nimbusBlueGrey", -0.027777791f, -0.100476064f, 0.035294116f,
      0);
  private Color color3 = decodeColor("nimbusBlueGrey", 0.055555582f, -0.10606203f, 0.13333333f, 0);
  private Color color4 = decodeColor("nimbusBlueGrey", -0.6111111f, -0.110526316f, 0.24705881f, 0);
  private Color color5 = decodeColor("nimbusBlueGrey", 0.02222228f, -0.06465475f, -0.31764707f, 0);
  private Color color6 = decodeColor("nimbusBlueGrey", 0.0f, -0.06766917f, -0.19607842f, 0);
  private Color color7 = decodeColor("nimbusBlueGrey", -0.006944418f, -0.0655825f, -0.04705882f, 0);
  private Color color8 = decodeColor("nimbusBlueGrey", 0.0138888955f, -0.071117446f, 0.05098039f,
      0);
  private Color color9 = decodeColor("nimbusBlueGrey", 0.0f, -0.07016757f, 0.12941176f, 0);
  private Color color10 = decodeColor("nimbusBlueGrey", 0.0f, -0.05967886f, -0.5137255f, 0);
  private Color color11 = decodeColor("nimbusBlueGrey", 0.0f, -0.05967886f, -0.5137255f, -255);
  private Color color12 = decodeColor("nimbusBlueGrey", -0.027777791f, -0.07826825f, -0.5019608f,
      -255);
  private Color color13 = decodeColor("nimbusBlueGrey", -0.015872955f, -0.06731644f, -0.109803915f,
      0);
  private Color color14 = decodeColor("nimbusBlueGrey", 0.0f, -0.06924191f, 0.109803915f, 0);
  private Color color15 = decodeColor("nimbusBlueGrey", -0.015872955f, -0.06861015f, -0.09019607f,
      0);
  private Color color16 = decodeColor("nimbusBlueGrey", 0.0f, -0.06766917f, 0.07843137f, 0);


  //Array of current component colors, updated in each paint call
  private Object[] componentColors;

  public ScrollBarTrackPainter(PaintContext ctx, int state) {
    super();
    this.state = state;
    this.ctx = ctx;
  }

  @Override
  protected void doPaint(Graphics2D g, JComponent c, int width, int height,
      Object[] extendedCacheKeys) {
    //populate componentColors array with colors calculated in getExtendedCacheKeys call
    componentColors = extendedCacheKeys;
    //generate this entire method. Each state/bg/fg/border combo that has
    //been painted gets its own KEY and paint method.
    switch (state) {
      case BACKGROUND_DISABLED:
        paintBackgroundDisabled(g);
        break;
      case BACKGROUND_ENABLED:
        paintBackgroundEnabled(g);
        break;

    }
  }


  @Override
  protected final PaintContext getPaintContext() {
    return ctx;
  }

  private void paintBackgroundDisabled(Graphics2D g) {
    rect = decodeRect1();
    g.setPaint(decodeGradient1(rect));
    g.fill(rect);

  }

  private void paintBackgroundEnabled(Graphics2D g) {
    rect = decodeRect1();
    g.setPaint(decodeGradient2(rect));
    g.fill(rect);
    path = decodePath1();
    g.setPaint(decodeGradient3(path));
    g.fill(path);
    path = decodePath2();
    g.setPaint(decodeGradient4(path));
    g.fill(path);
    path = decodePath3();
    g.setPaint(decodeGradient5(path));
    g.fill(path);
    path = decodePath4();
    g.setPaint(decodeGradient6(path));
    g.fill(path);

  }


  private Rectangle2D decodeRect1() {
    rect.setRect(decodeX(0.0f), //x
        decodeY(0.0f), //y
        decodeX(3.0f) - decodeX(0.0f), //width
        decodeY(3.0f) - decodeY(0.0f)); //height
    return rect;
  }

  private Path2D decodePath1() {
    path.reset();
    path.moveTo(decodeX(0.7f), decodeY(0.0f));
    path.lineTo(decodeX(0.0f), decodeY(0.0f));
    path.lineTo(decodeX(0.0f), decodeY(1.2f));
    path.curveTo(decodeAnchorX(0.0f, 0.0f), decodeAnchorY(1.2000000476837158f, 0.0f),
        decodeAnchorX(0.30000001192092896f, -1.0f), decodeAnchorY(2.200000047683716f, -1.0f),
        decodeX(0.3f), decodeY(2.2f));
    path.curveTo(decodeAnchorX(0.30000001192092896f, 1.0f), decodeAnchorY(2.200000047683716f, 1.0f),
        decodeAnchorX(0.6785714030265808f, 0.0f), decodeAnchorY(2.799999952316284f, 0.0f),
        decodeX(0.6785714f), decodeY(2.8f));
    path.lineTo(decodeX(0.7f), decodeY(0.0f));
    path.closePath();
    return path;
  }

  private Path2D decodePath2() {
    path.reset();
    path.moveTo(decodeX(3.0f), decodeY(0.0f));
    path.lineTo(decodeX(2.2222223f), decodeY(0.0f));
    path.lineTo(decodeX(2.2222223f), decodeY(2.8f));
    path.curveTo(decodeAnchorX(2.222222328186035f, 0.0f), decodeAnchorY(2.799999952316284f, 0.0f),
        decodeAnchorX(2.674603223800659f, -1.0f), decodeAnchorY(2.1857142448425293f, 1.0f),
        decodeX(2.6746032f), decodeY(2.1857142f));
    path.curveTo(decodeAnchorX(2.674603223800659f, 1.0000000000000036f),
        decodeAnchorY(2.1857142448425293f, -1.0f), decodeAnchorX(3.0f, 0.0f),
        decodeAnchorY(1.2000000476837158f, 0.0f), decodeX(3.0f), decodeY(1.2f));
    path.lineTo(decodeX(3.0f), decodeY(0.0f));
    path.closePath();
    return path;
  }

  private Path2D decodePath3() {
    path.reset();
    path.moveTo(decodeX(0.11428572f), decodeY(1.3714286f));
    path.curveTo(decodeAnchorX(0.11428572237491608f, 0.7857142857142856f),
        decodeAnchorY(1.3714286088943481f, -0.571428571428573f),
        decodeAnchorX(0.4642857015132904f, -1.3571428571428572f),
        decodeAnchorY(2.0714285373687744f, -1.5714285714285694f), decodeX(0.4642857f),
        decodeY(2.0714285f));
    path.curveTo(decodeAnchorX(0.4642857015132904f, 1.3571428571428577f),
        decodeAnchorY(2.0714285373687744f, 1.5714285714285694f),
        decodeAnchorX(0.8714286088943481f, 0.21428571428571352f),
        decodeAnchorY(2.7285714149475098f, -1.0f), decodeX(0.8714286f), decodeY(2.7285714f));
    path.curveTo(decodeAnchorX(0.8714286088943481f, -0.21428571428571352f),
        decodeAnchorY(2.7285714149475098f, 1.0f),
        decodeAnchorX(0.3571428656578064f, 1.5000000000000004f),
        decodeAnchorY(2.3142857551574707f, 1.642857142857146f), decodeX(0.35714287f),
        decodeY(2.3142858f));
    path.curveTo(decodeAnchorX(0.3571428656578064f, -1.5000000000000004f),
        decodeAnchorY(2.3142857551574707f, -1.642857142857146f),
        decodeAnchorX(0.11428572237491608f, -0.7857142857142856f),
        decodeAnchorY(1.3714286088943481f, 0.571428571428573f), decodeX(0.11428572f),
        decodeY(1.3714286f));
    path.closePath();
    return path;
  }

  private Path2D decodePath4() {
    path.reset();
    path.moveTo(decodeX(2.1111112f), decodeY(2.7f));
    path.curveTo(decodeAnchorX(2.1111111640930176f, 0.4285714285714306f),
        decodeAnchorY(2.700000047683716f, 0.6428571428571388f),
        decodeAnchorX(2.626984119415283f, -1.571428571428573f),
        decodeAnchorY(2.200000047683716f, 1.6428571428571388f), decodeX(2.6269841f), decodeY(2.2f));
    path.curveTo(decodeAnchorX(2.626984119415283f, 1.571428571428573f),
        decodeAnchorY(2.200000047683716f, -1.6428571428571388f),
        decodeAnchorX(2.8412699699401855f, 0.7142857142857224f),
        decodeAnchorY(1.3857142925262451f, 0.6428571428571459f), decodeX(2.84127f),
        decodeY(1.3857143f));
    path.curveTo(decodeAnchorX(2.8412699699401855f, -0.7142857142857224f),
        decodeAnchorY(1.3857142925262451f, -0.6428571428571459f),
        decodeAnchorX(2.5238094329833984f, 0.7142857142857117f),
        decodeAnchorY(2.057142734527588f, -0.8571428571428541f), decodeX(2.5238094f),
        decodeY(2.0571427f));
    path.curveTo(decodeAnchorX(2.5238094329833984f, -0.7142857142857117f),
        decodeAnchorY(2.057142734527588f, 0.8571428571428541f),
        decodeAnchorX(2.1111111640930176f, -0.4285714285714306f),
        decodeAnchorY(2.700000047683716f, -0.6428571428571388f), decodeX(2.1111112f),
        decodeY(2.7f));
    path.closePath();
    return path;
  }


  private Paint decodeGradient1(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.5f * w) + x, (0.0f * h) + y, (0.5f * w) + x, (1.0f * h) + y,
        new float[]{0.016129032f, 0.038709678f, 0.061290324f, 0.16091082f, 0.26451612f, 0.4378071f,
            0.88387096f},
        new Color[]{color1,
            decodeColor(color1, color2, 0.5f),
            color2,
            decodeColor(color2, color3, 0.5f),
            color3,
            decodeColor(color3, color4, 0.5f),
            color4});
  }

  private Paint decodeGradient2(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.5f * w) + x, (0.0f * h) + y, (0.5f * w) + x, (1.0f * h) + y,
        new float[]{0.0f, 0.030645162f, 0.061290324f, 0.09677419f, 0.13225806f, 0.22096774f,
            0.30967742f, 0.47434634f, 0.82258064f},
        new Color[]{color5,
            decodeColor(color5, color6, 0.5f),
            color6,
            decodeColor(color6, color7, 0.5f),
            color7,
            decodeColor(color7, color8, 0.5f),
            color8,
            decodeColor(color8, color9, 0.5f),
            color9});
  }

  private Paint decodeGradient3(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.0f * w) + x, (0.0f * h) + y, (0.9285714f * w) + x,
        (0.12244898f * h) + y,
        new float[]{0.0f, 0.1f, 1.0f},
        new Color[]{color10,
            decodeColor(color10, color11, 0.5f),
            color11});
  }

  private Paint decodeGradient4(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((-0.045918368f * w) + x, (0.18336426f * h) + y, (0.872449f * w) + x,
        (0.04050711f * h) + y,
        new float[]{0.0f, 0.87096775f, 1.0f},
        new Color[]{color12,
            decodeColor(color12, color10, 0.5f),
            color10});
  }

  private Paint decodeGradient5(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.12719299f * w) + x, (0.13157894f * h) + y, (0.90789473f * w) + x,
        (0.877193f * h) + y,
        new float[]{0.0f, 0.5f, 1.0f},
        new Color[]{color13,
            decodeColor(color13, color14, 0.5f),
            color14});
  }

  private Paint decodeGradient6(Shape s) {
    Rectangle2D bounds = s.getBounds2D();
    float x = (float) bounds.getX();
    float y = (float) bounds.getY();
    float w = (float) bounds.getWidth();
    float h = (float) bounds.getHeight();
    return decodeGradient((0.86458343f * w) + x, (0.20952381f * h) + y, (0.020833189f * w) + x,
        (0.95238096f * h) + y,
        new float[]{0.0f, 0.5f, 1.0f},
        new Color[]{color15,
            decodeColor(color15, color16, 0.5f),
            color16});
  }


}
